B-6
OPERATION
B-6
Rev. 13
INVERTEC
®
CC400-T/TP
2 START CURRENT
This function controls the initial current when a TIG
welding is started.
3 UPSLOPE TIME
In the TIG welding modes, this function controls the
linear increase of the current from Start to Set
Current. When remote command connected, this is
not used.
4 SET CURRENT
This function is used to set the Output Current used
during welding.
4a DUTY CYCLE (PULSING ON-TIME)
When the pulse feature is ON, this function controls
the pulsing on-time.
4b FREQUENCY
When the pulse feature is ON, this function controls
the pulsing frequency.
4d BACKGROUND
When the pulse feature is ON, this function controls
the pulsing Background current.
5 DOWNSLOPE TIME
In the TIG welding modes, this function controls the
linear decrease of the current from Set to Crater
Current. When remote command connected, this is
not used.
6 CRATER
This function controls the final current value after
the Downslope.
7 POSTFLOW
In the TIG welding modes, this function controls the
shielding gas Postflow time.
The new parameter value is automatically saved.
TIG Trigger Sequences
TIG welding can be done in either 2-step or 4-step mode.
The specific sequences of operation for the trigger modes
are explained below.
Symbols used:
Torch Button
Output Current
Gas Pre-flow
Gas
Gas Post-flow
2-Step Trigger Sequence
To select 2-Step sequence:
Action
Visualization
Press crater button until the LED above lights up
With the 2-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.
1. Press and hold the TIG torch trigger. The machine
will open the gas valve to start the flow of the
shielding gas. After the Pre flow time, to purge air
from the torch hose, the output of the machine is
turned ON. At this time the arc is started according
to the selected welding mode. After the arc is started
the output current will be increased and reached set
current at the end of upslope time.
2. Release the TIG torch trigger. The machine will now
decrease the output current at downslope time, until
the Crater current is reached and the output of the
machine is turned OFF. The gas valve will remain
open to continue the flow of the shielding gas till post
flow time is over.
As shown above, it is possible to press and hold the TIG
torch trigger during downslope to quickly enter into Crater
current mode. When the TIG torch trigger is released, (if
release time is within downslope, then output will remain
crater current until downslope time is over) the output will
turn OFF and the Postflow time will start.
4-Step Trigger Sequence
To select 4-Step sequence:
Action
Visualization
Press crater button until the LED above lights up
With the 4-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.